SB 10.87.11
tulya-sruta-tapah-silas
tulya-sviyari-madhyamah
api cakruh pravacanam
ekam susrusavo ’pare
Translation:
Although these sages were all equally qualified in terms of Vedic study and austerity, and although they all saw friends, enemies and neutral parties equally, they chose one of their number to be the speaker, and the rest became eager listeners.